The Rebel Alliance, also known as the ''Rebellion'' or ''Rebels'', are a team of those opposing the evil Galactic Empire.

After Lyrl Dox, Vril Dox's son, usurped his father's control over L.E.G.I.O.N., Vril and everyone still loyal to him created the R.E.B.E.L.S., Revolutionary Elite Brigade to Eradicate L.E.G.I.O.N. Supremacy.

These are the individuals have received one of Agent Graves Attachés complete with information about the person who ruined their lives, a gun, 100 bullets and the immunity to do justice themselves. While some succeeded in this task, others failed...failure equaling death.

The R.E.C.R.U.I.T.S. are the trainee division of L.E.G.I.O.N.

A kind of gorillas from the Lava Hills of Khitai

Redblood is the Russian counterpart of Younblood led by ex-KGB leader General Alexander Strokia.

Rock band.

A new team that was introduce in the Stalinverse that is meant to be a world security force.

Pirates of the Vilayet Sea.

The Redcaps come from the faerie realm. They are short, wear red caps, often appear naked under overcoats, and use dangerous slings as weapons.

Cybernetically enhanced black market arms dealers

Lead by a "Company" agent named, Aleister Ravenna, the Red Dragon are a group that are trying to control the world via mind-control.

The Redeemers were a team of superhuman criminals seeking amnesty for their crimes. They were operatives of the V-Battalion.

The Redeemers were a group gathered by Nighthawk, to oppose the Squadron Supreme's Utopia Program, the team included former Squadron and Institute Of Evil members along with some others.

A team of ex-mercenaries in the future of Earth-7484, trying to undo the wrongs they did and free America from the despotic designs of Hellinger.

Originally organized by the Redeemer to take down the Sinister Spiderman (Venom)

A battalion of men assembled by Joe Tripoli to fight for Queen Xandra.

The Red Guard is an elite team of SHIELD agents in the House of M universe, created when the Scarlet Witch re-built reality to fit her desires. Wolverine is their leader, but when he apparently goes rogue, the rest of the team is forced to hunt him down.

A group of criminals located in Philadelphia.

A gang of Gotham criminals who rotate men under the guise of their leader in order to help protect the identity of the gang's true leaders if a job goes wrong. The most notable "leader" of the Red Hood Gang was the man who became the Joker.

The Red Hood Gang are a hooded gangsters and are enemies of Red Dolan.

Powered by the red light of rage, Atrocitus and his Red Lanterns travel the universe enacting violent retribution against injustice wherever they find it.

One of the races of Barsoom.

The Red Right Hand are a collection of non-powered humans dedicated to destroying Wolverine. The members share a history with him in that he at some point in each of their lives victimized them and/or a loved one causing them to hold a lifelong vendetta.

The Red Room, also known as the Black Widow Program, is a top-secret Soviet brainwashing and training program. The program takes young women and turns them into the world's deadliest and most elite assassins.

The Red Shadows are the enemy to the Action Force. The Red Shadows have recently been revived as an additional enemy to G. I. Joe.

The Red Shadows is the Russian equivalent of the Suicide Squad, led by Major Zastrow.

A Neo-Nazi militia that mixes iconography of both Johann Schmidt and Frank Castle.

The Red Slayers are an elite fighting force in the Valusian army, serving as both King Kull's cavalry, and as his personal bodyguard at the palace.

Former circus group led by Oswald Cobblepot.

Trio of Golden Age patriotic soldiers.

Defenders of the Martian emperors' tombs

Astro City new teenage team of the 21st Century.

Re:Gex is a team of mutants and cyborgs fighting for justice and peace in a world ruled by lord sharpe, a crime lord.

Regional Preturnatural Investigation Taskforce (RPIT) is a special unit of the St. Louis Police Department in "Anita Blake: Vampire Hunter" series.

The Regulators were a group of humans who were opposed to superhero involvement in their society. They fought against the Protectors.

Banded by the crime czar Vendetta, the Regulators are a team of mercenaries to fight against Shadowhawk.

Supremeverse's Avengers.

The Nazi alternate version of the X-men. A group of enginereed mutants at the service of the Nazi power from Earth-597.

The Reid Family is a long line of Superhero's that include both the Lone Ranger and the Green Hornet.